64720405

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{5881}}^1$

素因数の和:5988

約数の個数: 16

約数和(自身を含む): 81312768

約数和(自身を除く): 16592363

約数列:

[1, 5, 31, 71, 155, 355, 2201, 5881, 11005, 29405, 182311, 417551, 911555, 2087755, 12944081, 64720405]

約数ペア:

[(1, 64720405), (5, 12944081), (31, 2087755), (71, 911555), (155, 417551), (355, 182311), (2201, 29405), (5881, 11005)]